ITEM: 0.31 Min Bore Diam, 13/4 Max Bore Depth, 5/16 Shank Diam, Radial Relief Boring Bar SCIENTIFIC CUTTING TOOLS. MANUFACTURER: SCIENTIFIC CUTTING TOOLS. BRAND: Scientific Cutting Tools. MANUFACTURER PART: BB3116. 0.31 Min Bore Diam, 13/4 Max Bore Depth, 5/16 Shank Diam, Radial Relief Boring Bar Right Hand Cut, Solid Carbide, Uncoated (MOQ1, Pkg Qty1)CATEGORIES: Maintenance, Repair and Operational (MRO) Supplies. Boring Bars & Grooving Tools. N/A. TOTAL RECYCLED CONTENT: 10.00%. POSTCONSUMER RECYCLED CONTENT: 1.00%. KEYWORDS: Scientific Cutting ToolsBoring Bars & Grooving ToolsBoring BarsN/AN/A.